<template>
      <footer class="footer">
      <!-- This should be `0 items left` by default -->
      <span class="todo-count">剩余<strong>{{shengyu}}</strong></span>
      <!-- Remove this if you don't implement routing -->
      <ul class="filters">
        <li>
          <a @click="$emit('changeFlag', '1')" :class="{selected :flag ===1}" href="#/">全部任务</a>
        </li>
        <li>
          <a  @click="$emit('changeFlag', '2')" :class="{selected :flag ===2}" href="#/active" >进行中</a>
        </li>
        <li>
          <a @click="$emit('changeFlag', '3')" :class="{selected :flag ===3}" href="#/completed" >已完成</a>
        </li>
      </ul>
      <!-- Hidden if no completed items are left ↓ -->
      <button class="clear-completed" @click="$emit('delCompleted')">清除已完成</button>
    </footer>
</template>

<script>
export default {
  props:{
    list:Array,
    flag:Number
  },
  computed:{
    shengyu(){
      return this.list.filter(item=>item.isDone===false).length
    },
  }
}
</script>

<style>

</style>